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构造直角三角形解航行问题
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作者 明安荣 《中学课程辅导(初三版)》 2002年第8期15-15,共1页
关键词 构造法 直角三角形 航行问题 数形结合 中考 数学思想方法 数学 解法
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巧选参照物妙解航行问题
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作者 朱贤贤 《初中生学习技巧》 2000年第6期20-20,共1页
关键词 参照物 航行问题 初中 教学 物体相对运动 物理
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齐奥尔科夫斯基
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作者 本刊编辑部 《数理天地(高中版)》 2003年第2期1-2,共2页
神舟4号已返回,载人的神舟5号将发射,此时,我们不应该忘记他:一位自学成才的中学数、理教师,杰出的俄罗斯科学家,世界航天之父——
关键词 齐奥尔科夫斯基 俄罗斯 人物传记 引力中心不变定理 宇宙航行问题 星际火箭
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The Use of PBL (Problem-Based Learning) in Improving the Student Performance in Navigation 3 (Terrestrial and Coastal Navigation)
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作者 Ma. Corazon S. NavallaseaI 2/M Mario B. Dumaicos 2/M Narciso F. Atanacio 《Journal of Shipping and Ocean Engineering》 2017年第4期161-167,共7页
This quasi-experimental study aimed at looking into the effectiveness of PBL (problem-based learning) in improving the performance in Navigation 3 (terrestrial and coastal navigation) of BSMT (Bachelor of Science... This quasi-experimental study aimed at looking into the effectiveness of PBL (problem-based learning) in improving the performance in Navigation 3 (terrestrial and coastal navigation) of BSMT (Bachelor of Science in Marine Transportation) second year students at JBLFMU-Arevalo during the first semester of school year 2016-2017. The respondents of this research were the two sections comparable with each other who was enrolled in the subject Navigation 3. There were 60 student respondents composed of 30 in the experimental group and 30 in the control group. A validated three item teacher-made problem solving test with 10 points for each correct answer was used as an instrument. The dependent variable was the scores in Navigation 3 and independent variable was the PBL approach. The statistical tools used were mean, standard deviation, Mann-Whitney test, and Wilcoxon-Signed ranks test set at 0.05 level of significance. The effect size was computed to determine the effectiveness of the PBL approach in terms of students' performance in Navigation 3. Results showed that in the pretest, though the experimental group had a higher mean than the control group, the Mann-Whitney test showed that the mean scores of the two groups were comparable because the significant value was greater than 0.05. When the treatment was introduced, findings showed that there were significant differences in the Navigation 3 performance in the pretest and posttest of experimental and control groups as well as in the posttests of both groups. It could be inferred that the better performance of the experimental group could be attributed to the intervention where the students were actively involved in the learning process. 展开更多
关键词 Problem-based learning terrestrial navigation coastal navigation QUASI-EXPERIMENTAL JBLFMU-Arevalo.
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三论打通图们江入海通道 被引量:2
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作者 石源华 《世界知识》 2015年第11期73-73,共1页
打通图们江入海通道,是中国人民尤其是东北人民几代人的期望。早在1964年,中国外交部就在第一次中苏边界谈判中首次提出中国船舶沿图们江出海航行问题,同时也向朝鲜方面提出该问题,后因中苏关系破裂,该问题被搁置。
关键词 图们江 通道 中国人民 中苏关系 中国外交部 东北人民 航行问题 边界谈判
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